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Dissociating mental transformations and visuo-spatial storage in working memory: Evidence from representational neglect

机译：分离工作记忆中的心理转变和视觉空间存储：来自表征疏忽的证据

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摘要

A study is reported of visuo-spatial working memory in two individuals suffering from a cognitive deficit known as unilateral spatial neglect, and seven healthy control participants. Both patients have difficulties reporting details on the left side of imaged representations, and one has an additional difficulty with perceptual input to the left of his body midline. All participants were asked to report the location and identity of objects presented in novel 2 x 2 arrays that were either present throughout or were described orally by the experimenter, with no visual input. On half of the trials, the report was to be made from the opposite perspective, requiring 180 degree mental rotation of the mentally represented array. The patients show an impaired ability to report details from the presented or the imagined left, but had no difficulty with mental rotation. Results point to a clear separation between the processes of perception and those of visuo-spatial working memory. Results also suggest that the patients might be suffering from damage to the system used for holding visuo-spatial representations rather than a difficulty with attending to elements of that representation.
机译：一项研究报道了视觉空间工作记忆在两名患有认知缺陷（称为单侧空间忽视）的个体和七名健康对照参与者中的表现。两名患者都难以在图像表示的左侧报告详细信息，并且一位患者在其身体中线左侧的感知输入上还存在其他困难。要求所有参与者报告以新颖的2 x 2阵列呈现的物体的位置和身份，这些物体在整个实验过程中都存在或由实验者进行口头描述，而没有视觉输入。在一半的试验中，该报告是从相反的角度做出的，要求精神代表阵列进行180度的智力旋转。患者表现出从所报告的或所想象的左侧报告细节的能力受损，但是在精神旋转方面没有困难。结果表明，知觉过程与视觉空间工作记忆之间存在明显的分离。结果还表明，患者可能遭受了用于持有视觉空间表示的系统的损害，而不是难以处理该表示的要素。

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